Parts for your 2020 Toyota Rav4-Oil seals

2020 Toyota RAV4 oil seals — what they do and when to sort them

Oil seals are absolutely relevant on the 2020 Toyota RAV4. Toyota’s Service Information (TIS) repair manual for the 2020 RAV4 (A25A-FKS petrol and A25A-FXS hybrid) and the Toyota Electronic Parts Catalogue both show multiple radial lip oil seals throughout the engine, transaxle and driveline. They’re there to keep oil in, dust and water out, and to protect bearings and rotating assemblies over the long haul.

On this RAV4, oil seals are fitted anywhere a rotating shaft passes through a housing full of lubricant. Think of them as tight, flexible gaskets with a spring-loaded lip that rides the shaft. Their job is to maintain the oil film, control pressure and stop leaks as temperatures and revs swing about. They’re not a routine “every X kilometres” replacement item, instead, they get replaced if they leak, are damaged, or when nearby work makes access easy.

• Front crankshaft oil seal (timing cover end)
• Rear main seal (between engine and transmission)
• Camshaft seals (timing end)
• Transaxle drive shaft (CV) oil seals
• AWD transfer case input/output seals (where fitted)
• Rear differential pinion and side oil seals (AWD)

As part of regular servicing (typically every 12 months or 10,000–15,000 kilometres locally), a quick visual once-over for weeps around the front cover, bellhousing, driveshaft stubs, transfer case and rear diff is smart. Catching a minor weep early prevents oil softening rubber bushes, swelling hoses or flicking onto brakes and undertrays. If the transmission, transfer or diff oils drop, address it pronto to avoid expensive wear.

• Tell-tales of a failing seal: oily mist on the undertray, spots on the driveway, a hot oil whiff after parking, or grease/oil flung around a CV area.

• Good practice when replacing: use quality (OE-spec) seals, lightly oil the lip, install square and to the specified depth with the correct driver, apply FIPG/sealant only where the manual calls for it, check breather operation so pressure doesn’t force new seals to weep, inspect the shaft for grooves and sleeve or replace if needed, finish by topping up and rechecking for leaks after a short drive.

Technical sources: Toyota TIS Repair Manual (Engine, Transaxle/Hybrid Transaxle, Driveline) for 2020 RAV4 and the Toyota Electronic Parts Catalogue identify the above seal locations and outline installation specs, sealant use and special service tools.

Do the 2020 RAV4 Hybrid and petrol models use different oil seals?
The engine-side seals are much the same conceptually across the A25A family, but part numbers and dimensions can vary by engine and drivetrain. The hybrid’s transaxle and AWD rear drive unit use different seals to the conventional auto. Always match by VIN in the Toyota EPC before ordering.

How often should oil seals be replaced on a 2020 RAV4?
There’s no set interval. They’re replaced on condition—if a leak is present, during related repairs (like timing cover work), or while the transmission is out. Inspect for weeps at each service and act early to avoid collateral damage.

Is it okay to drive with a minor oil seal weep?
A short-term weep might not strand the vehicle, but it can degrade rubber parts, contaminate belts or brakes, and in severe cases lead to low oil levels. For engine, transaxle, transfer and diff, monitor levels closely and book a repair sooner rather than later.